Rename PPB_Find_Dev to PPB_Find_Private

ppapi/api/dev/ppp_find_dev.idl

-/* Copyright (c) 2014 The Chromium Authors. All rights reserved.
- * Use of this source code is governed by a BSD-style license that can be
- * found in the LICENSE file.
- */
-
-label Chrome {
-  M14 = 0.3
-};
-
-/**
- * TODO(raymes): Make PPP/PPB_Find_Dev a private interface.
- */
-interface PPP_Find_Dev {
-  /**
-   * Finds the given UTF-8 text starting at the current selection. The number of
-   * results will be updated asynchronously via NumberOfFindResultsChanged in
-   * PPB_Find. Note that multiple StartFind calls can happen before StopFind is
-   * called in the case of the search term changing.
-   *
-   * Return PP_FALSE if the plugin doesn't support find in page. Consequently,
-   * it won't call any callbacks.
-   */
-  PP_Bool StartFind([in] PP_Instance instance,
-                    [in] str_t text,
-                    [in] PP_Bool case_sensitive);
-
-  /**
-   * Go to the next/previous result.
-   */
-  void SelectFindResult([in] PP_Instance instance,
-                        [in] PP_Bool forward);
-
-  /**
-   * Tells the plugin that the find operation has stopped, so it should clear
-   * any highlighting.
-   */
-  void StopFind([in] PP_Instance instance);
-};